I think you will be pleased with the 14-150, it punches above its weight.
I agree - but I'd still advise never pitting it directly against the 12-40mm, as I did, stupidly ... For what it is, the 14-150mm II does a very good job, it's just not a champion for pixel peepers. FWIW, bokeh at 150mm is really great, and sharpness is good enough for normal viewing sizes.
Bringing the X 113 along solves any low light worries you might have had. That said, today, I'd combine the 14-150mm II with the Panasonic 25mm f/1.4 II for a really nice and compact travel setup - or get the OM Systems 20mm f/1.4 which is an even better lens. Only one body, and even with the Panasonic, usable sealing (not for downpours as with the 14-150mm II, but I'd have no reservations about taking it out in light rain). With the OM Systems 20mm, it'd be a perfect and hassle-free three-piece travel kit that'd leave some room in even the smallest of bags. Bliss.
Thankfully, my current Z 18-140mm *is* an optically better performer than the 14-150mm II - however, it shares none of its other advantages (reach, size, sealing to the same degree). And I still have the E-M5 III ... Rats. I really shouldn't have thought about all that.*
You'll have a lot of fun!
*My current compact travel setup, the Nikon Z 6 with Z 24-200mm and Z 40mm, also fits into the very bag I'm thinking of; I could swap the 40mm for the Z 35mm f/1.8 S for even more optical prowess, and better sealing, too. I'm good. But the Nikon kit is at least 50% bigger and heavier than the Olympus combo would be.